bump rails

closes #6140

Gemfile

 source "https://rubygems.org"
 
-gem "rails", "4.2.2"
+gem "rails", "4.2.3"
 
 # Legacy Rails features, remove me!
 

Gemfile.lock

@@ -3,44 +3,44 @@ GEM
   remote: https://rails-assets.org/
   specs:
     CFPropertyList (2.3.1)
-    actionmailer (4.2.2)
-      actionpack (= 4.2.2)
-      actionview (= 4.2.2)
-      activejob (= 4.2.2)
+    actionmailer (4.2.3)
+      actionpack (= 4.2.3)
+      actionview (= 4.2.3)
+      activejob (= 4.2.3)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.2)
-      actionview (= 4.2.2)
-      activesupport (= 4.2.2)
+    actionpack (4.2.3)
+      actionview (= 4.2.3)
+      activesupport (= 4.2.3)
       rack (~> 1.6)
       rack-test (~> 0.6.2)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
     actionpack-action_caching (1.1.1)
       actionpack (>= 4.0.0, < 5.0)
     actionpack-page_caching (1.0.2)
       actionpack (>= 4.0.0, < 5)
-    actionview (4.2.2)
-      activesupport (= 4.2.2)
+    actionview (4.2.3)
+      activesupport (= 4.2.3)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
     active_model_serializers (0.9.3)
       activemodel (>= 3.2)
-    activejob (4.2.2)
-      activesupport (= 4.2.2)
+    activejob (4.2.3)
+      activesupport (= 4.2.3)
       globalid (>= 0.3.0)
-    activemodel (4.2.2)
-      activesupport (= 4.2.2)
+    activemodel (4.2.3)
+      activesupport (= 4.2.3)
       builder (~> 3.1)
-    activerecord (4.2.2)
-      activemodel (= 4.2.2)
-      activesupport (= 4.2.2)
+    activerecord (4.2.3)
+      activemodel (= 4.2.3)
+      activesupport (= 4.2.3)
       arel (~> 6.0)
     activerecord-import (0.8.0)
       activerecord (>= 3.0)
-    activesupport (4.2.2)
+    activesupport (4.2.3)
       i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
@@ -503,16 +503,16 @@ GEM
       rack
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.2)
-      actionmailer (= 4.2.2)
-      actionpack (= 4.2.2)
-      actionview (= 4.2.2)
-      activejob (= 4.2.2)
-      activemodel (= 4.2.2)
-      activerecord (= 4.2.2)
-      activesupport (= 4.2.2)
+    rails (4.2.3)
+      actionmailer (= 4.2.3)
+      actionpack (= 4.2.3)
+      actionview (= 4.2.3)
+      activejob (= 4.2.3)
+      activemodel (= 4.2.3)
+      activerecord (= 4.2.3)
+      activesupport (= 4.2.3)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.2)
+      railties (= 4.2.3)
       sprockets-rails
     rails-assets-diaspora_jsxc (0.1.1)
       rails-assets-jquery (~> 1.11.1)
@@ -580,9 +580,9 @@ GEM
       remotipart (~> 1.0)
       safe_yaml (~> 1.0)
       sass-rails (>= 4.0, < 6)
-    railties (4.2.2)
-      actionpack (= 4.2.2)
-      activesupport (= 4.2.2)
+    railties (4.2.3)
+      actionpack (= 4.2.3)
+      activesupport (= 4.2.3)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rainbow (2.0.0)
@@ -686,7 +686,7 @@ GEM
       multi_json (~> 1.0)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
-    sprockets-rails (2.3.1)
+    sprockets-rails (2.3.2)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
@@ -816,7 +816,8 @@ DEPENDENCIES
   rack-protection (= 1.5.3)
   rack-rewrite (= 1.5.1)
   rack-ssl (= 1.4.1)
-  rails (= 4.2.2)
+  rails (= 4.2.3)
+  rails-assets-autosize (= 3.0.6)!
   rails-assets-diaspora_jsxc (~> 0.1.1)!
   rails-assets-highlightjs (= 8.5.0)!
   rails-assets-jakobmattsson--jquery-elastic (= 1.6.11)!
@@ -874,4 +875,4 @@ DEPENDENCIES
   will_paginate (= 3.0.7)
 
 BUNDLED WITH
-   1.10.4
+   1.10.5